A. Lestra et P. Brosson, DESIGN RULES FOR A LOW-CHIRP INTEGRATED DFB LASER WITH AN ELECTROABSORPTION MODULATOR, IEEE photonics technology letters, 8(8), 1996, pp. 998-1000
Feedback from the front facet of an integrated DFB laser with an elect
roabsorption modulator generates additional chirp to the single modula
tor. The reduction of the sensitivity to that feedback is in tradeoff
relation with the external differential quantum efficiency and the sin
gle-mode yield. We introduce a figure-of-merit for the feedback sensit
ivity. It is obtained from the modeling of the small signal frequency
modulation (FM). It indicates design rules for low-chirp and high-effi
ciency devices.